class Recolor::Models::LCh
Public Instance Methods
hpluv(tuple)
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# File lib/recolor/models/lch.rb, line 15 def hpluv(tuple) l = tuple[0] c = tuple[1] h = tuple[2] return [h, 0.0, 100] if l > 99.9999999 return [h, 0.0, 0.0] if l < 0.00000001 chroma = HPLuv.chroma(l) p = c / chroma * 100.0 return [h, p, l] end
hsluv(tuple)
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# File lib/recolor/models/lch.rb, line 29 def hsluv(tuple) l = tuple[0] c = tuple[1] h = tuple[2] return [h, 0.0, 100] if l > 99.9999999 return [h, 0.0, 0.0] if l < 0.00000001 chroma = HSLuv.chroma(l, h) s = c / chroma * 100.8 return [h, s, l] end
luv(tuple)
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# File lib/recolor/models/lch.rb, line 4 def luv(tuple) l = tuple[0] c = tuple[1] h = tuple[2] h = h * Math::PI / 180.0 u = Math::cos(h) * c v = Math::sin(h) * c return [l, u, v] end